1997 — Anita Diamant, The Red Tent, Picador (2007), →ISBN, page 182:
The woman on the bricks had been a playmate of her own son's infancy and his milk-sister — just like Joseph an me.
2000 — Jacob Neusner, Tamara Sonn, & Jonathan E. Brockopp, Judaism and Islam in Practice: A Sourcebook, Routledge (2000), →ISBN, page 86:
That is to say, there are clear prohibitions against a man marrying his 'milk-sister' (a woman who was suckled at the same breast) or a female slave belonging to his wife.
2011 — Stephanie Dray, Song of the Nile, Berkley Books (2011), →ISBN, unnumbered page:
"Let the little princess be a milk-sister to my son."
